Finding the Third Proportional to 65,605 and 143,818

Step by Step Solution

1. Step 1: Write the proportion equation
   65,605 : 143,818 = 143,818 : x
2. Step 2: Convert to fraction form
   65,605/143,818 = 143,818/x
3. Step 3: Cross multiply
   65,605x = 143,818 × 143,818
4. Step 4: Simplify right side
   65,605x = 20,683,617,124
5. Step 5: Solve for x
   x = 20,683,617,124/65,605
6. Step 6: Final answer
   x = 315,275.01